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. 2014 Sep 30;14:526. doi: 10.1186/1471-2334-14-526

Table 3.

Post-hoc univariate analysis (analysis 2): PCR Pertussis positive: suspected (group III) versus non-suspected pertussis group (group V)

Variable	P value
Age (months)	0,180^a
Gender	0,112^b
Coinfections	0,708^a
Hospitalization	0,513^b
Duration of Illness	0,140^a
Fever	0,264^b
Cough	Np
Rhinorrhea	Np
Apnea	Np
Wheezing	0,271^b
Cyanosis	0,791^b
Retractions	0,515^b
Tachypnea	0,507^b
Paroxysmal coughing	0,0076 ^b
Disease severity score	0,844^a
Combined URTI and LRTI	0,0132 ^b
Exclusively URTI	0,0136 ^b
Chest radiograph	0,509^b
Start antibiotics	0,0122 ^b

^aKruskal Wallis test for continuous variables.

^bBinomial test for discrete variables.

np = not possible.

Significant differences noted as bold.